Proxy must contain port and host field – How to solve this Elasticsearch exception

Opster Team

August-23, Version: 6.8-8.9

Briefly, this error occurs when Elasticsearch is configured to use a proxy, but the ‘port’ and ‘host’ fields are missing in the proxy settings. Elasticsearch needs these fields to know where to route the traffic. To resolve this issue, you should check your Elasticsearch configuration and ensure that the proxy settings include both ‘port’ and ‘host’ fields. If these fields are missing, add them with the appropriate values. Also, ensure that the syntax is correct and there are no typographical errors.

This guide will help you check for common problems that cause the log ” Proxy must contain ‘port’ and ‘host’ field ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: plugin.

Log Context

Log “Proxy must contain ‘port’ and ‘host’ field” class name is We extracted the following from Elasticsearch source code for those seeking an in-depth context :

 }  if (port == null || host == null) {
 throw new ElasticsearchParseException("Proxy must contain 'port' and 'host' field");
 }  return new HttpProxy(host; port; scheme);